Local and Global Defaults

IPCS has two types of default values:

Local defaults. These values are currently in use for an ISPF screen in the IPCS dialog, for a batch IPCS session, or for an IPCS interactive line-mode session.
Global defaults. These values are used to establish the local defaults when IPCS processing starts in an ISPF screen, a batch IPCS session, or an IPCS interactive line-mode session.
Your global defaults are obtained from the dump directory being used. IPCS uses as the global defaults the following, in this order:
1. The last value specified as a global default in a SETDEF subcommand or on the IPCS Default Values panel in the IPCS dialog.
2. The value in the IPCSPRxx parmlib member. For information on IPCSPRxx see Providing Format and Analysis Support.
3. The IBM-supplied value.

In addition, a subcommand can override a current local default by specifying a SETDEF parameter. For each subcommand in z/OS MVS IPCS Commands, the SETDEF-defined parameters are grouped in the syntax diagram, thereby identifying the SETDEF-defined parameters that apply specifically to the subcommand. The overriding values in these parameters apply only to the subcommand, are not saved in your user dump directory, and are not retrieved by an EVALDEF subcommand.